/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.antgroup.geaflow.collection.array;

import java.util.HashMap;
import java.util.Map;
import java.util.function.Function;

public class PrimitiveArrayFactory {

    private static final Function<Integer, PrimitiveArray> DEFAULT_BUILDER = ObjectArray::new;
    private static final Map<Class<?>, Function<Integer, PrimitiveArray>> UNMARSHALL = new HashMap<>();

    static {
        UNMARSHALL.put(Integer.class, IntArray::new);
        UNMARSHALL.put(Integer.TYPE, IntArray::new);
        UNMARSHALL.put(Long.class, LongArray::new);
        UNMARSHALL.put(Long.TYPE, LongArray::new);
        UNMARSHALL.put(Double.class, DoubleArray::new);
        UNMARSHALL.put(Double.TYPE, DoubleArray::new);
        UNMARSHALL.put(Byte.class, ByteArray::new);
        UNMARSHALL.put(Byte.TYPE, ByteArray::new);
        UNMARSHALL.put(Float.class, FloatArray::new);
        UNMARSHALL.put(Float.TYPE, FloatArray::new);
        UNMARSHALL.put(Boolean.class, BooleanArray::new);
        UNMARSHALL.put(Boolean.TYPE, BooleanArray::new);
        UNMARSHALL.put(Short.class, ShortArray::new);
        UNMARSHALL.put(Short.TYPE, ShortArray::new);
        UNMARSHALL.put(byte[].class, BytesArray::new);
    }

    public static PrimitiveArray getCustomArray(Class<?> type, int capacity) {
        return UNMARSHALL.getOrDefault(type, DEFAULT_BUILDER).apply(capacity);
    }
}
